Transformative Effect of Li Salt for Proactively Mitigating Interfacial Side Reactions in Sodium-Ion Batteries

Transformative Effect of Li Salt for Proactively Mitigating Interfacial Side Reactions in Sodium-Ion Batteries

Highlights LiPF6 integration into sodium-ion battery electrolytes strengthens solid electrolyte interphase (SEI) film and stabilizes O3 electrode surfaces, enhancing cycleability with 92.7% at 400 cycles. Li-based SEI exhibits reduced solubility, effectively suppressing sodium-ion and electron leaka...

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Main Authors: Jooeun Byun, Joon Ha Chang, Chihyun Hwang, Chae Rim Lee, Miseung Kim, Jun Ho Song, Boseong Heo, Sunghun Choi, Jong Hyeok Han, Hee-Jae Jeon, Beom Tak Na, Youngjin Kim, Ji-Sang Yu, Hyun-seung Kim
Format: Article
Language:English
Published: SpringerOpen 2025-04-01
Series:Nano-Micro Letters
Subjects:
Lithium salt
Electrolyte
Solid electrolyte interphase
Sodium-ion batteries
Additive
Online Access:https://doi.org/10.1007/s40820-025-01742-z
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Summary:Highlights LiPF6 integration into sodium-ion battery electrolytes strengthens solid electrolyte interphase (SEI) film and stabilizes O3 electrode surfaces, enhancing cycleability with 92.7% at 400 cycles. Li-based SEI exhibits reduced solubility, effectively suppressing sodium-ion and electron leakage, and mitigating electrolyte decomposition on hard carbon electrode. The formation of Li-ion pillars on O3-type electrode surfaces significantly reduces oxygen release and electrolyte degradation, resulting in improved capacity retention.
ISSN:2311-6706
2150-5551

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